Résultats de la recherche

1. Development of a spatially-explicit minimum realistic model for Antarctic toothfish (Dissostichus mawsoni) and its main prey (Macrouridae and Channichthyidae) in the Ross Sea

   Antarctic toothfish and its main prey, grenadiers (Macrouridae) and icefish (Channichthyidae), we develop a ... spatially explicit model using a predator-prey suitability model for the Ross Sea Region. We model the age ... fishing mortality on both prey species and that icefish is expected to show a larger increase in biomass ... through time than grenadiers. It also suggests that a prey-suitability function is more likely than a ...

   Meeting Document : WG-EMM-14/51 : Auteur(s): S. Mormede, M. Pinkerton, A. Dunn, S. Hanchet and S. Parker (New Zealand)

2. KRILLBASE: a multinational, circumpolar database of abundance of Antarctic krill and salps

   webs and biogeochemical cycles. Sustainably managing the fishery for Antarctic krill against a backdrop ... scientists has collated these disparate data into a central database called KRILLBASE, a composite ... aim is to provide a temporal-spatial data resource to support studies of Southern Ocean ecology ... led to a series of papers since 2004 that illustrate some of its potential uses. The latest version ...

   Meeting Document : SC-CAMLR-XXXV/BG/24 Rev. 1 : Auteur(s): A. Atkinson, S. Hill, H. Peat, R. Downie and L. Gerrish

3. Increasing abundance of Type A killer whales (Orcinus orca) in the coastal waters around the Antarctic Peninsula

   and we need to understand the impact on marine ecosystems. A diverse community of killer whales ... (Orcinus orca; Types B1, B2 and A) are important top predators around the AP, but there are currently no ... Antarctica. In contrast, less is known about the Type A killer whales that are more typical in appearance to ... killer whales sighted in other parts of the world.  Sightings of Type A around the AP have been ...

   Meeting Document : WG-EMM-17/49 : Auteur(s): H. Fearnbach, J.W. Durban, D.K. Ellifrit and R.L. Pitman

4. Adélie penguin diet: a pilot study directly comparing data from stomach flushing with faecal DNA analysis

   composition and mass. Analysing prey DNA in faeces may be a useful, less invasive, approach to complement ... existing diet monitoring. We undertook a pilot study to directly compare these two methods using Adélie ... /January) in 2014/15 and 2015/16. Each method produced a similar pattern of penguin diet, with a shift from ... almost exclusively krill in 2014/15 to a mixture of fish and krill in 2015/16. Stomach flushing allows ...

   Meeting Document : WG-EMM-18/29 : Auteur(s): B. Deagle, J. McInnes, L. Emmerson, M. Dunn, S. Adlard and C. Waluda

5. An identification of areas within the high seas of the Southern Ocean that would contribute to a representative system of marine protected areas

   the primary responsibility for developing a representative system of marine protected areas (RSMPA ... conservation planning to identify potential areas for inclusion in a RSMPA. We address this gap in existing ... knowledge by identifying areas that would contribute to a comprehensive, adequate and representative system ... underway. We aim to identify a system of areas that will capture the set of specified conservation features ...

   Meeting Document : WS-MPA-11/16 : Auteur(s): L.L. Douglass, D. Beaver, J. Turner and R. Nicoll (WWF–ASOC)

6. Preliminary investigations into a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region

   Abstract:  In 2013, the Scientific Committee of CCAMLR could not achieve consensus on a stock ... 88.2H. As a consequence, WG-SAM requested further runs be carried out with emigration estimated in the ... model. However, the models that mimicked emigration in a single area assessment model failed to provide ... present the preliminary development of a two-area stock assessment model. A two-area model is a method for ...

   Meeting Document : WG-FSA-14/57 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

7. Revised estimates of yield for Electrona carlsbergi based on a generalised version of the CCAMLR krill yield model

   Abstract:  Traditional methods for estimating yield per recruit as a function of fishing mortality ... probabilities of the stock of Electrona carlsbergi becoming depleted over a 20 year period. These projections ... have been undertaken using a generalised version of the CCAMLR Krill Yield Model. This is appropriate ... because this species has a number of similar attributes to krill, including population dynamics, behaviour ...

   Meeting Document : WG-FSA-94/21 : Auteur(s): A.J. Constable and W.K. de la Mare (Australia)

8. Proposal for a SCOR Working Group to identify Ecosystem Essential Ocean Variables for measuring change in the biological properties of marine ecosystems

   Abstract:  A proposal for a SCOR “Working Group to identify Ecosystem Essential Ocean Variables ... Group is to develop a set of essential variables for monitoring that would contribute to assessments of ... whole-of-ecosystem status and change.  The intention of the SCOR Working Group is to provide a mechanism ... for linking a number of groups working on this issue, leading to a symposium in 2016.  The proposal is ...

   Meeting Document : WG-EMM-12/45 : Auteur(s): A. Constable (Australia)

9. A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2013 random stratified trawl survey

   vicinity of Heard Island during April 2013. This paper provides a preliminary assessment of mackerel ... using standard CCAMLR methods. A large cohort of fish, estimated to be 3+, dominates the population in ... both abundance and biomass. Two scenarios for harvest are presented – a typical two year projection of ... the population, and a projection accounting for the fact that the abundant 3+ year class is likely to ...

   Meeting Document : WG-FSA-13/23 : Auteur(s): D.C. Welsford (Australia)

10. A false positive in the CCAMLR tag overlap statistic arising from low catch volume and consequent limited sample size

    2013/14 the vessel Argos Georgia achieved a tag overlap statistic of 52% rather than the required ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged was ... of fish tagged did not match closely with that of the catch resulting in a the overlap statistic, as ... not a case of only small fish being tagged. The low tag overlap statistic is shown to be a sampling ...

    Meeting Document : WG-FSA-14/31 : Auteur(s): C. Darby (United Kingdom)

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